The preliminary study of the technical and legal aspects of photographic reproduction of copyright works, submitted to the UNESCO General Conference shows that the use of modern methods of reproduction, including photocopying, microform reproduction and analogous procedures, makes it desirable to seek ways of reconciling users' interests with the rights of the authors and publishers of works reproduced in this way. While it is necessary to protect the legitimate rights of copyright holders, their control over the use of copyright works must not become an obstacle to the development and improvement of documentation systems. Account must be taken of the interests of authors and publishers, but also of the advantages that photographic reproduction processes offer to users, libraries, documentation centres, educational establishments, research workers, etc. This report does not repeat the arguments set forth in the preliminary study regarding the desirability and timeliness of adopting an international regulation on this subject, but takes into account new factors that have become operative since that document was prepared. This report also considers the possible scope of the proposed regulation and the method which should be adopted for the purpose. (Author/SJ)